DD118105A5 - - Google Patents
Info
- Publication number
- DD118105A5 DD118105A5 DD185892A DD18589275A DD118105A5 DD 118105 A5 DD118105 A5 DD 118105A5 DD 185892 A DD185892 A DD 185892A DD 18589275 A DD18589275 A DD 18589275A DD 118105 A5 DD118105 A5 DD 118105A5
- Authority
- DD
- German Democratic Republic
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/18—Separation; Purification; Stabilisation; Use of additives
- C07C263/20—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US468246A US3912600A (en) | 1974-05-09 | 1974-05-09 | Recovery of polymethylene polyphenyl polyisocyanate from a phoshenosed polyamine feed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD118105A5 true DD118105A5 (enrdf_load_stackoverflow) | 1976-02-12 |
Family
ID=23859029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD185892A DD118105A5 (enrdf_load_stackoverflow) | 1974-05-09 | 1975-05-07 |
Country Status (11)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631168B2 (de) * | 1976-07-10 | 1979-03-08 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Diisocyanatodiphenylmethan-Isomeren mit einem eingestellten Gehalt an Chlorverbindungen |
| US4189354A (en) * | 1976-07-10 | 1980-02-19 | Bayer Aktiengesellschaft | Process for the production of diisocyanatodiphenyl methane isomers with an adjusted content of chlorine compounds |
| DE3145010A1 (de) * | 1981-11-12 | 1983-05-19 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von 4,4'-diisocyanatodiphenylmethan |
| US4876380A (en) * | 1988-08-31 | 1989-10-24 | The Dow Chemical Company | Color reduction of polymeric isocyanates via multiple solvent fractionation |
| US5202001A (en) * | 1989-09-26 | 1993-04-13 | Air Products And Chemicals, Inc. | Preparation of urethane prepolymers having low levels of residual toluene diisocyanate |
| US5051152A (en) * | 1989-09-26 | 1991-09-24 | Air Products And Chemicals, Inc. | Preparation of urethane prepolymers having low levels of residual toluene diisocyanate |
| US5216042A (en) * | 1991-07-10 | 1993-06-01 | The Dow Chemical Company | Process for preparing viscosity-stabilized reactive toluene diisocyanate distillation residues and blends thereof |
| US5185384A (en) * | 1991-01-28 | 1993-02-09 | The Dow Chemical Company | Method for reducing hydrolyzable chloride in toluene diisocyanate |
| DE4142769A1 (de) * | 1991-12-23 | 1993-06-24 | Bayer Hispania Ind S A | Verfahren zur herstellung von isocyanaten und aufarbeitung des rueckstandes |
| US5312971A (en) * | 1992-07-23 | 1994-05-17 | Miles Inc. | Color reduction of polymethylene polyphenyl polyisocyanates |
| SE9403929L (sv) * | 1994-11-15 | 1996-05-16 | Chematur Eng Ab | Sätt vid fosgenering |
| US5942151A (en) * | 1997-11-20 | 1999-08-24 | Bayer Corporation | Polymeric MDI color |
| DE10260082A1 (de) * | 2002-12-19 | 2004-07-01 | Basf Ag | Verfahren zur kontinuierlichen Herstellung von Isocyanaten |
| DE10333929A1 (de) * | 2003-07-25 | 2005-02-24 | Bayer Materialscience Ag | Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat |
| DE102004005320A1 (de) * | 2004-02-04 | 2005-08-25 | Bayer Materialscience Ag | Herstellung von Di- und Polysocyanaten der Diphenylmethanreihe mit definierter Acidität |
| JP2008524273A (ja) * | 2004-12-22 | 2008-07-10 | ランクセス・ドイチュランド・ゲーエムベーハー | 有機イソシアネート中の塩素含有成分を減少させるための方法 |
| FR2925498B1 (fr) * | 2007-12-21 | 2010-04-02 | Rhodia Operations | Procede de reduction de l'acidite residuelle d'isocyanatosilanes |
| JP2010120870A (ja) * | 2008-11-18 | 2010-06-03 | Nippon Polyurethane Ind Co Ltd | メチレン架橋ポリフェニルポリイソシアネートの製造方法 |
| US8907124B2 (en) | 2010-11-17 | 2014-12-09 | Basf Se | Process for preparing methylenedi(phenyl isocyanate) |
| CN103298781B (zh) | 2010-11-17 | 2015-04-22 | 巴斯夫欧洲公司 | 制备亚甲基二苯基二异氰酸酯的方法 |
| KR102416360B1 (ko) * | 2016-08-04 | 2022-07-04 | 코베스트로 도이칠란트 아게 | 정류 컬럼 제어 방법 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1469105A (fr) * | 1965-12-27 | 1967-02-10 | Toulousaine De Prod Chim Toloc | Procédé de fabrication d'esters isocyaniques |
| US3549504A (en) * | 1966-05-05 | 1970-12-22 | Takeda Chemical Industries Ltd | Method for the purification of organic polyisocyanates by fractional distillation in presence of an inert gas or superheated vapor of an organic solvent |
| US3816496A (en) * | 1972-01-03 | 1974-06-11 | Olin Corp | Solvent extraction and distillation technique for purification of organic isocyanates |
-
1974
- 1974-05-09 US US468246A patent/US3912600A/en not_active Expired - Lifetime
-
1975
- 1975-04-07 GB GB1418775A patent/GB1458323A/en not_active Expired
- 1975-04-10 DE DE2515628A patent/DE2515628B2/de not_active Withdrawn
- 1975-04-23 SU SU7502129156A patent/SU584763A3/ru active
- 1975-04-23 IT IT49268/75A patent/IT1035443B/it active
- 1975-05-07 ES ES437487A patent/ES437487A1/es not_active Expired
- 1975-05-07 NL NLAANVRAGE7505399,A patent/NL171578C/xx not_active IP Right Cessation
- 1975-05-07 FR FR7514468A patent/FR2270276B1/fr not_active Expired
- 1975-05-07 DD DD185892A patent/DD118105A5/xx unknown
- 1975-05-07 BR BR3527/75A patent/BR7502764A/pt unknown
- 1975-05-08 JP JP50055350A patent/JPS5218699B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2270276A1 (enrdf_load_stackoverflow) | 1975-12-05 |
| NL7505399A (nl) | 1975-11-11 |
| NL171578C (nl) | 1983-04-18 |
| ES437487A1 (es) | 1977-04-16 |
| FR2270276B1 (enrdf_load_stackoverflow) | 1979-10-05 |
| SU584763A3 (ru) | 1977-12-15 |
| BR7502764A (pt) | 1976-03-16 |
| US3912600A (en) | 1975-10-14 |
| NL171578B (nl) | 1982-11-16 |
| DE2515628B2 (de) | 1979-03-15 |
| DE2515628A1 (de) | 1975-11-20 |
| GB1458323A (en) | 1976-12-15 |
| JPS5218699B2 (enrdf_load_stackoverflow) | 1977-05-24 |
| JPS50157346A (enrdf_load_stackoverflow) | 1975-12-19 |
| IT1035443B (it) | 1979-10-20 |